[tixml]保存，读取

保存：

//xml的实体
    TiXmlElement* rootElement = new TiXmlElement("spark");
    rootElement->SetAttribute("name", m_sParticleName.c_str());
 
    //建立xml用于保存
    TiXmlDocument *doc = new TiXmlDocument;
    //声明
    TiXmlDeclaration *dec = new TiXmlDeclaration("1.0", "utf-8", "");
    doc->LinkEndChild(dec);
    doc->LinkEndChild(rootElement);
    doc->SaveFile(_xmlOutFilePath.c_str());

读取：

TiXmlDocument *doc = new TiXmlDocument;
    doc->LoadFile(_xmlFilePath.c_str());